The Number System
What you need to add/subtract fractions, but not multiply/divide them.
What are common denominators?
Two ratios form a proportion if they are this.
What is equivalent?
The mathematical definition of substitution.
What is "plugging a number in for a variable in an expression/equation?"
The difference between surface area and volume.
What is "surface area is the area of each side of the shape, while volume is the space inside?" or "surface area is measured in square units, while volume is measured in cubic units?"
The definitions of mean, median, mode, and range.
What is "mean is the average, median is the middle, mode is the most-often, and range is the difference between the max and min?"
Subtracting a negative number (less negative) is the same as this.
What is adding a positive number (more positive)?
80% of 200
What is 160?
A non-example of like terms.
What is (answers vary) x2 and x, etc.?
The procedure for finding the volume of any prism.
What is "find the area of the base, and multiply it by the length the prism was extended?"
The difference between likelihood and probability.
What is "likelihood is a word like Impossible or Likely, while probability is a number between 0 and 1?"
After multiplying two negative numbers together, your answer will be this.
What is positive?
What are checking for proportionality and finding a missing value?
The definition of the distributive property.
What is a(b+c)=ab+bc? (Or, an explanation in words)
The tool that allows us to measure angles.
What is a protractor?
Jared plays football, and wants to know which sport 7th graders prefer. He asks only the 7th grade football team. The reason why this is not a fair, unbiased sample to collect data from.
What is "he should ask random 7th graders because the football players are likely to like football?"
After you have set up a division problem where the divisor is a decimal number, this is the step you have to do before you start dividing. (This includes what happens to the divisor and dividend.)
What is "make the divisor a whole number by moving the decimal point. Then, you move the decimal point in the dividend the same number of times?"
Three examples of scale drawings/models.
What are blueprints, dollhouses, model cars, maps, diagrams in text books, etc.?
The first thing you do to solve a two-step equation or inequality.
What is undoing the addition/subtraction?
The definitions of complementary, supplementary, and vertical angles.
What is "complementary add up to 90 degrees, supplementary add up to 180 degrees, and vertical are across from each other and equal to each other?"
The three probability models we discussed in class.
What are a list, a table, and a tree?
The process for using a number line to add/subtract integers.
What is "less positive/more negative, you move to the left. More positive/less negative you move to the right?"
The definition of the constant of proportionality and the equation to find it.
What is "the value that you multiply x by to get y or the relationship between x and y through multiplication, and k=y/x?"
The process for graphing the solution set of inequalities.
What is "choosing an open or closed dot based on the sign (or equal to = closed), and choosing a left or right arrow based on the sign (less Left, gReater Right)?"
What do we do to find the area of a composite/compound shape?
What is "split the shape into shapes we know?"
The process for finding the Mean Absolute Deviation (MAD) and what it is.
What is "you find the mean, and then note how far each data point is from the mean, and then find the mean of that information. The MAD shows how far, on average, each data point is from the mean."